Mel told the Daily Mirror: "Me and Mel C were in the bathroom. To get my costume off you had to go fully naked. So I'm sitting there on the loo, naked with Mel C and then in walked Kate Moss and Naomi Campbell.

"Melanie was like, 'You couldn't even write that.' I won't tell you what happened next but it was lovely."

This isn't the only embarrassing thing to happen to the 37-year-old in recent weeks.